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J Endod：不同上下提拉的速率对定心率和镍钛旋转器械的垂直压力及扭矩的影响

2018-12-25 lishiting MedSci原创

提拉速度定心率扭矩压力镍钛锉
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这篇研究的目的是为了评估上下提拉的速率如何影响定心率和ProTaper Next旋转器械(Dentsply Maillefer, Ballaigues, Switzerland)扭矩/压力的产生。

这篇研究的目的是为了评估上下提拉的速率如何影响定心率和ProTaper Next旋转器械(Dentsply Maillefer， Ballaigues， Switzerland)扭矩/压力的产生。研究使用ProTaper Next X1， X2和X3器械预备21个具有J型根管形态的树脂模拟根管块，使用适宜的自动根管预备和扭矩/压力检测设备在上下提拉速率设定为10， 50和100 mm/min (low-， medium-， and high-speed groups， respectively)的情况下进行定速预备和检测。将预备前后的影像重叠，距根尖0-3 mm处计算中心率。同时，也记录最大垂直压力和扭矩。数据通过1-way analysis of variance和Tukey检验进行统计学评估。结果显示，在距离根尖0， 0.5， 1和2 mm处，高速组展现出最低的中心率(ie， 最小偏移)，随后为中速组和低速组(P < .05)。压力值(向下和向上)在上下提拉速度增加时趋于升高；使用X2和X3锉时，高速组和/或中速组产生的压力值明显高于低速组(P < .05)。对于所有锉

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    2019-09-28 12498d2fm62(暂无昵称)

    #镍钛#

    0

  2. [GetPortalCommentsPageByObjectIdResponse(id=1740784, encodeId=ee671e4078498, content=<a href='/topic/show?id=c6e79682831' target=_blank style='color:#2F92EE;'>#镍钛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96828, encryptionId=c6e79682831, topicName=镍钛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3d7034811791, createdName=12498d2fm62(暂无昵称), createdTime=Sat Sep 28 18:29:00 CST 2019, time=2019-09-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1746428, encodeId=ba421e46428e2, content=<a href='/topic/show?id=ff0658838ff' target=_blank style='color:#2F92EE;'>#旋转器械#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58838, encryptionId=ff0658838ff, topicName=旋转器械)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b1b635755035, createdName=nymo, createdTime=Sun Sep 01 09:29:00 CST 2019, time=2019-09-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1679742, encodeId=ab3616e974203, content=<a href='/topic/show?id=d4ac9639efa' target=_blank style='color:#2F92EE;'>#钛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96397, encryptionId=d4ac9639efa, topicName=钛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=927227807332, createdName=30397613, createdTime=Sun Mar 31 00:29:00 CST 2019, time=2019-03-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1497495, encodeId=d8d2149e4957e, content=<a href='/topic/show?id=567d5481984' target=_blank style='color:#2F92EE;'>#扭矩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54819, encryptionId=567d5481984, topicName=扭矩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=dc669331105, createdName=日月, createdTime=Thu Dec 27 12:29:00 CST 2018, time=2018-12-27, status=1, ipAttribution=)]
    2019-09-01 nymo

    #旋转器械#

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1740784, encodeId=ee671e4078498, content=<a href='/topic/show?id=c6e79682831' target=_blank style='color:#2F92EE;'>#镍钛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96828, encryptionId=c6e79682831, topicName=镍钛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3d7034811791, createdName=12498d2fm62(暂无昵称), createdTime=Sat Sep 28 18:29:00 CST 2019, time=2019-09-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1746428, encodeId=ba421e46428e2, content=<a href='/topic/show?id=ff0658838ff' target=_blank style='color:#2F92EE;'>#旋转器械#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58838, encryptionId=ff0658838ff, topicName=旋转器械)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b1b635755035, createdName=nymo, createdTime=Sun Sep 01 09:29:00 CST 2019, time=2019-09-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1679742, encodeId=ab3616e974203, content=<a href='/topic/show?id=d4ac9639efa' target=_blank style='color:#2F92EE;'>#钛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96397, encryptionId=d4ac9639efa, topicName=钛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=927227807332, createdName=30397613, createdTime=Sun Mar 31 00:29:00 CST 2019, time=2019-03-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1497495, encodeId=d8d2149e4957e, content=<a href='/topic/show?id=567d5481984' target=_blank style='color:#2F92EE;'>#扭矩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54819, encryptionId=567d5481984, topicName=扭矩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=dc669331105, createdName=日月, createdTime=Thu Dec 27 12:29:00 CST 2018, time=2018-12-27, status=1, ipAttribution=)]
    2019-03-31 30397613

    #钛#

    0

  4. [GetPortalCommentsPageByObjectIdResponse(id=1740784, encodeId=ee671e4078498, content=<a href='/topic/show?id=c6e79682831' target=_blank style='color:#2F92EE;'>#镍钛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96828, encryptionId=c6e79682831, topicName=镍钛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=3d7034811791, createdName=12498d2fm62(暂无昵称), createdTime=Sat Sep 28 18:29:00 CST 2019, time=2019-09-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1746428, encodeId=ba421e46428e2, content=<a href='/topic/show?id=ff0658838ff' target=_blank style='color:#2F92EE;'>#旋转器械#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=50, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=58838, encryptionId=ff0658838ff, topicName=旋转器械)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=b1b635755035, createdName=nymo, createdTime=Sun Sep 01 09:29:00 CST 2019, time=2019-09-01, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1679742, encodeId=ab3616e974203, content=<a href='/topic/show?id=d4ac9639efa' target=_blank style='color:#2F92EE;'>#钛#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=49, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=96397, encryptionId=d4ac9639efa, topicName=钛)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=927227807332, createdName=30397613, createdTime=Sun Mar 31 00:29:00 CST 2019, time=2019-03-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1497495, encodeId=d8d2149e4957e, content=<a href='/topic/show?id=567d5481984' target=_blank style='color:#2F92EE;'>#扭矩#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=58, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=54819, encryptionId=567d5481984, topicName=扭矩)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=dc669331105, createdName=日月, createdTime=Thu Dec 27 12:29:00 CST 2018, time=2018-12-27, status=1, ipAttribution=)]
    2018-12-27 日月

    #扭矩#

    0

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